From b71ef639bf6187c1867154ba7ada042df0692bb6 Mon Sep 17 00:00:00 2001
From: clowwindy <clowwindy42@gmail.com>
Date: Thu, 23 May 2013 12:41:08 +0800
Subject: [PATCH] try to fix OPENSSL_assert(inl > 0)

---
 encrypt.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/encrypt.py b/encrypt.py
index 5ee6754..0ce2342 100644
--- a/encrypt.py
+++ b/encrypt.py
@@ -166,4 +166,6 @@ class Encryptor(object):
                 decipher_iv = buf[:decipher_iv_len]
                 self.decipher = self.get_cipher(self.key, self.method, 0, iv=decipher_iv)
                 buf = buf[decipher_iv_len:]
+                if len(buf) == 0:
+                    return buf
             return self.decipher.update(buf)